Guest Guests Posted 01/03/07 08:24 AM Share Posted 01/03/07 08:24 AM The point I was trying to make is this:A turbocharger is a centrifugal air pump, and ANY centrifugal pump whether it pumps fluid or air will be exposed to shock loadings if the inlet is closed or restricted, and also if the outlet is closed or restricted, though to a lesser degree.Given that we are talking about a compressible medium (air) here, there is more flexibility, and the application is more forgiving than with fluid, however, there is no doubt that from a mechanical engineering point of view, it is better to avoid having these shock loads in the first place.Now you may run 999 turbos where this has no impact, but just maybe on car 1000 something will fail as a result, thus the recommendation to have a BOV in the first place.Another statement from Garret regarding BOV's: "Blow-Off Valves will improve throttle (time to boost) response as well as help relieve the damaging effects of compressor "surge loading". I just assume that the manufacturer who makes thousands of these things, will have a fair idea ←I agree with you ninka garrett has a bit more of a clue than some others!!!!!couple of thaughts compare: a, comp and turbine wheel size to shaft size in a vlb, now the ba roller turboc, now tell me which one has the larger wheel to shaft size ratio?d, why would you use a totally different designed turbo as an example to make a point when its not relevent?go with garrett's recomendations as some others talk or just wear the costs!!!!! Link to comment Share on other sites More sharing options...
Ninka Donating Members 1,850 Member For: 22y 30d Gender: Male Location: Perth, WA Posted 01/03/07 09:19 AM Share Posted 01/03/07 09:19 AM Ninka,I'm assuming that what I've done to mine is still safe?? as it's still using the BOV but simply venting atmo?? Or is there more to it then that??←As long as you have a filter, you are safe (not legal though ) Link to comment Share on other sites More sharing options...
JimmyXR6T04 Member 1,299 Member For: 19y 7m 3d Location: Canberra Posted 01/03/07 12:38 PM Author Share Posted 01/03/07 12:38 PM (edited) Ninka,I'm assuming that what I've done to mine is still safe?? as it's still using the BOV but simply venting atmo?? Or is there more to it then that??←As long as you have a filter, you are safe (not legal though )←so a filter over the BOV?? I was under the impression that air wouldn't get sucked through?? when I put my hand over it, I could certainly feel air coming out.. or would it suck air in when the car is under load?? I was told that a filter wasn't needed because air wouldn't be getting in that way, only out.Many thanks to all the replies guys, it's much appreciated. Edited 01/03/07 12:39 PM by JimmyXR6T04 Link to comment Share on other sites More sharing options...
JET4CE Member 29 Member For: 18y 9m 22d Posted 03/03/07 07:19 AM Share Posted 03/03/07 07:19 AM Gday guys,Just finished reverse venting my blow off valve like others have done but went for a drive and I can barely hear it, if hear it at all. I have put a filter on the end to keep at dirt out of it.Any ideas why I cant hear it??Cheers Link to comment Share on other sites More sharing options...
ROLMDL role model Member 1,111 Member For: 18y 10m 13d Gender: Male Location: Melbourne,S.E Posted 03/03/07 07:23 AM Share Posted 03/03/07 07:23 AM (edited) Gday guys,Just finished reverse venting my blow off valve like others have done but went for a drive and I can barely hear it, if hear it at all. I have put a filter on the end to keep at dirt out of it.Any ideas why I cant hear it??Cheers←have you got a k&n filter or BMC filter ?? or still using thestock filter?possible mabye discconected the wrong hose.on stock boost you not gonig to hear the much but should still hear it. Edited 03/03/07 07:23 AM by Black ThundeR Link to comment Share on other sites More sharing options...
JET4CE Member 29 Member For: 18y 9m 22d Posted 03/03/07 07:34 AM Share Posted 03/03/07 07:34 AM Yes I am running a K&N filter on itBasically I blocked off the pipe at the back, and ran the other pipe into the blow off valve an vented the other back to atmosphere with a filter on the end of it and extended the vacuum pipe and re-connected it??Confused Link to comment Share on other sites More sharing options...
ROLMDL role model Member 1,111 Member For: 18y 10m 13d Gender: Male Location: Melbourne,S.E Posted 03/03/07 07:53 AM Share Posted 03/03/07 07:53 AM (edited) Yes I am running a K&N filter on itBasically I blocked off the pipe at the back, and ran the other pipe into the blow off valve an vented the other back to atmosphere with a filter on the end of it and extended the vacuum pipe and re-connected it??Confused←bit confused lol all you need to do is block the return hose at the back near thefirwall and block that and just twist the bov so it face up and just chuck the lil filter ontop of the oulet that ventin out to atmo all done.got a pic on how you done it?it should look like this the angle not the best but the idea. Edited 03/03/07 07:55 AM by Black ThundeR Link to comment Share on other sites More sharing options...
JET4CE Member 29 Member For: 18y 9m 22d Posted 03/03/07 08:09 AM Share Posted 03/03/07 08:09 AM that's basically what I have done.Its the same as Crans has done on this posthttp://www.fordxr6turbo.com/forum/index.php?showtopic=32557 Link to comment Share on other sites More sharing options...
ROLMDL role model Member 1,111 Member For: 18y 10m 13d Gender: Male Location: Melbourne,S.E Posted 03/03/07 08:26 AM Share Posted 03/03/07 08:26 AM that's basically what I have done.Its the same as Crans has done on this posthttp://www.fordxr6turbo.com/forum/index.php?showtopic=32557←only problem with that setup is that the piping more longer and your on stock boost so there not much air to be push out. do it the other wayand should work good even put a pod filter works even better Link to comment Share on other sites More sharing options...
JET4CE Member 29 Member For: 18y 9m 22d Posted 03/03/07 08:32 AM Share Posted 03/03/07 08:32 AM Good Point! Thanks for the advice, I will try it your way and see if it makes a difference, its definetely louder with a pod.Thanks for the advice Link to comment Share on other sites More sharing options...
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